“The mystics aim (Union with Reality) is not the suppression of life but it's intensification”

Preface, Hot Afternoons Have Been in Montana: Poems, 1957

"The Artist and His Time"
Resistance, Rebellion, and Death (1960)

Source: 1960s, The Gutenberg Galaxy (1962), p. 214

Source: LSD : My Problem Child (1980), Ch. 11 : LSD Experience and Reality
Context: The characteristic property of hallucinogens, to suspend the boundaries between the experiencing self and the outer world in an ecstatic, emotional experience, makes it possible with their help, and after suitable internal and external preparation, as it was accomplished in a perfect way at Eleusis, to evoke a mystical experience according to plan, so to speak.
Meditation is a preparation for the same goal that was aspired to and was attained in the Eleusinian Mysteries. Accordingly it seems feasible that in the future, with the help of LSD, the mystical vision, crowning meditation, could be made accessible to an increasing number of practitioners of meditation
I see the true importance of LSD in the possibility of providing material aid to meditation aimed at the mystical experience of a deeper, comprehensive reality. Such a use accords entirely with the essence and working character of LSD as a sacred drug.

Notes from Devotional Authors of the Middle Ages (1873-1874)
Context: Where shall I find God? In myself. That is the true Mystical Doctrine. But then I myself must be in a state for Him to come and dwell in me. This is the whole aim of the Mystical Life; and all Mystical Rules in all times and countries have been laid down for putting the soul into such a state.
That the soul herself should be heaven, that our Father which is in heaven should dwell in her, that there is something within us infinitely more estimable than often comes out, that God enlarges this "palace of our soul" by degrees so as to enable her to receive Himself, that thus he gives her liberty but that the soul must give herself up absolutely to Him for Him to do this, the incalculable benefit of this occasional but frequent intercourse with the Perfect: this is the conclusion and sum of the whole matter, put into beautiful language by the Mystics. And of this process they describe the steps, and assign periods of months and years during which the steps, they say, are commonly made by those who make them at all.

As quoted in The Artist's Voice : Talks With Seventeen Modern Artists (1962) by Katharine Kuh, p. 128
1960s

Delhi Diary (3 November 1947 entry), Navajivan Publishing House, Ahmedabad, (March 1948) pp. 68-70
1940s

Source: The Ascent to Truth (1951), Ch. X : Reason in the Life of Contemplation, p. 114.
Context: One might compare the journey of the soul to mystical union, by way of pure faith, to the journey of a car on a dark highway. The only way the driver can keep to the road is by using his headlights. So in the mystical life, reason has its function. The way of faith is necessarily obscure. We drive by night. Nevertheless our reason penetrates the darkness enough to show us a little of the road ahead. It is by the light of reason that we interpret the signposts and make out the landmarks along our way.
Those who misunderstand Saint John of the Cross imagine that the way of nada is like driving by night, without any headlights whatever. This is a dangerous misunderstanding of the saint's doctrine.

Page 17.
Golden Booklet of the True Christian Life (1551)